A year after the pop party, guest heavy, Junior, Röyksopp is back with Senior—a dark and moody instrumental affair. The introverted ying to Junior’s unabashedly youthful yang, for the most part the tonal shift doesn’t equate to sleepy. Lack of pop structures be damned, the Norwegian duo have created a freewheeling, pleasant affair—even if we get the feeling we’ve heard it all before.More